Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Gen. Bio II - Invert
General Biology II - Intro. to Invertebrates
| Question | Answer |
|---|---|
| invertebrates are animals | without a backones |
| (vertebrates/invertebrates) account for 95% of known animal species | invertebrates |
| the simplest of animals are ___________________ and they are in the phylum ________________ | sponges; porifera |
| how does sponges feed | they are filter feeders; water flows through the porese in centrals cavity (spongocoel) and out thought larger opening (osculum) |
| on sponges, what are the collar cells with finger-like projections forming collar around flagellum | choanocytes |
| what is the function of choanocytes | engulf bacteria and other food via phagocytosis |
| what is the gelatinous region of the natural sponge that separates the two regions of the body | mesohyl |
| in sponges, this cell uses pseudopodia to digest food and carry it to other cells (like an amoebia) | amoebocytes |
| amoebocytes manufacture skeletal fibers called _________________________ that can become other kinds of sponge cells | totipotent |
| what is a hermaphrodite | when each individual functions as both male and female |
| sponges (are/are not) hermaphrodites | sponges ARE hermaphrodites |
| what are some medical benefites of sponges? | 1) produce a variety of antibiotics and other defensive compounds, 2) can be cancer fighting, 3) can kill penicillin-resistant Strep. |
| _________________________ are the ancient phylum of eumetazoans (true animals) and are currently known as the phylum Cnidaria | cnidarians are the ancient of true animals |
| this phylum includes hydras, chorals, and jellyfish | cnidarians include hyras, corals, and jellyfish |
| describe the body plans of the cnidarians | very basic/simple, diploblastic, radial |
| describe how cnidarians digest food | they have a sac with a central digestive compartment (gastovascular cavity) the opening of which serves as mouth an anus |
| name the two variations of the cnidarian body plans | sessile POLYP and motile MEDUSA |
| (polyps/medusas) are cylindrical forms that adhere to a substrate and wait for prey. Examples of body types are hydra and sea anemone | polyps |
| describe the body form of a medusa cnidarian | resembles a flattented, mouth-down version of a polyp. They move freely in water by drifting passively and contractions of bell-shaped body |
| an example of a medusa cnidarian is | a jellyfish |
| what are cnidae | capsul-like organells capable of exploding outward |
| specialized cnidae called __________________ containing stinking thread that can penetrate body wall of pray | nematocytes |
| as well as food digestion the ______________________ can also act as a hydrostatic skeleton | gastrovascular cavity |
| early in it's evolutionary history, the cnidarians diverged into what two major clades | 1) medusozoa and 2) anthozoa |
| medusa are part of the (medusocoans/anthozoan) clad | medusa are MEDUSOZOA |
| ______________________ are medusozoans that spend most of their life cycle in medusa stage | scyphozoans |
| cubozoans exist as "_______________________-___________________" medusa | box shaped |
| (scyphozoan/cubozoans) live in tropical oceans and are equipped with highly toxic cnidocytes | cubozoans live in oceans and have toxic cnidocytes |
| ____________________________ off the coast of Northern Australia is one of the deadliest organisms - with venom more potent than that of a cobra - can lead to respiratory failure, cardiac arrest, and death in minutes | sea wasp |
| what clade of cnidarians do sea anemones and coral belong to | anthozoans |
| anthozoans only occur as (medusa/polyps) | anthozoans only occur as POLYPS |
| corals live as solitary or colonial forms, often in symbiosis with __________________ and secrete a hard exoskeleton of _________________ | algae; calcium carbonate |
| this animal provides a habitat for many other species in tropical waters | corals |
| this clade has the widest range of animal body forms and includes parts of the bilateria clade | lophotrochozoans |
| the oldes bilaterian fossil is the mollusc _____________________ | Kimberella |
| what is the lophophore | a crown of ciliated tentacles that function in feeding |
| this group of lophotrochozoans have flattened bodies, are triploblastic develpment but are acoelomates and the flat shape of their bodies allows for greater surface area of diffusion of gas exchange and nitrogenous waste | flatworms |
| a couple of the members of the flatworm phylum includes | tapeworms and flukes |
| flatworms (do/do not) have specialized organs for gas exchange | flatworms DO NOT have organs for gas exchange |
| which clade of flatworms produces asexually by budding at the posterior end and offspring often reproduce without breaking off ("chain worm") | catenulida |
| ____________________ are the parasitic clade of flatworms that live in or on many animals | rhabditophora |
| two important clades in the parasitic Rhabditophora phylum include | 1) trematodes and 2) tapeworm |
| describe the life cycle of trematodes | complex life cycle alternating between sexual and asexual stages |
| throughout the life cycle of the tapeworm, it will infect (multiple/a single) host | multiple; many require an intermediate host in which larvae develop before infecting a final host (usually vertebrate) where adult worms live |
| schitstosomaisis is caused by ______________________ and disease with pain, anemia, and diarrhea | blood flukes |
| what is an alimentary canal | digestive tube with tw openings (mouth and anus) |
| rotifers are (true coelum/pseudocoelum) | rotifers are PSEUDOCOELUM |
| how are rotifers able to move | the pseudocoelum acts as a hydrostatic skeleton; movement of body distributes fluid throughout body, circulating nutrients |
| 29 |
Created by:
kandriot
Popular Biology sets